@misc{indiciaec22d2b6fe14c,
  title = {A urine volume measurement system},
  author = {Poppendiek, H. F. and Mouritzen, G. and Sabin, C. M.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730007368},
  note = {Source identifier: 19730007368}
}